Method and apparatus for efficient assistance data transfer in NR positioning

Patent metadata

Field	Value
Publication number	US-12282086-B2
Application number	US-202017787058-A
Country	US
Kind code	B2
Filing date	Dec 2, 2020
Priority date	Dec 20, 2019
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

A method of performing, by a first apparatus, wireless communication. The method may include receiving configuration related to a downlink (DL) positioning reference signal (PRS) from a location management function (LMF); receiving configuration related to an uplink (UL) PRS from a base station; and performing positioning based on round trip time (RTT), based on the configuration related to the DL PRS and the configuration related to the UL PRS.

First claim

What is claimed is:

1. A method method comprising:
obtaining i) a synchronization signal block (SSB) configuration, ii) a first delta configuration for the SSB configuration included in a sounding reference signal (SRS) configuration, and iii) a second delta configuration for the SSB configuration included in a downlink (DL) positioning reference signal (PRS) configuration; and
performing a multi round trip time (RTT) positioning based on the SRS configuration and the DL PRS configuration,
wherein, based on the SRS configuration being received before the DL PRS configuration is received, the SSB configuration is included in the SRS configuration and is absent in the DL PRS configuration, and
wherein, based on the DL PRS configuration being received before the SRS configuration is received, the SSB configuration is included in the DL PRS configuration and is absent in the SRS configuration.

2. The method of claim 1 , further comprising:
receiving an SSB based on at least one of the SSB configuration, the first delta configuration, or the second delta configuration.

3. The method of claim 1 , wherein the SSB configuration comprises at least one of: a physical cell identity (PCI), information related to a center frequency through which SSB is transmitted, information related to a frame in which SSB is transmitted, information related to a periodicity of SSB, information related to subcarrier spacing (SCS) of SSB, information related to single frequency network, information related to measurement timing of SSB, or SSB index.

4. The method of claim 3 , wherein the PCI includes information for a cell related to a communication device performing the method.

5. The method of claim 3 , wherein the information related to the center frequency includes a value related to an absolute radio frequency channel number (ARFCN).

6. The method of claim 3 , wherein the information related to the frame in which SSB is transmitted includes a timing where SSB is transmitted in the frame in which SSB is transmitted.

7. The method of claim 6 , wherein based on the information related to the frame in which SSB is transmitted is 0, SSB is transmitted in a first half frame of the frame in which SSB is transmitted, and
wherein based on the information related to the frame in which SSB is transmitted is 1, SSB is transmitted in a second half frame of the frame in which SSB is transmitted.

8. The method of claim 3 , wherein the information related to the periodicity of SSB includes information related to the periodicity of SSB from a serving transmission reception point (TRP) for a communication device performing the method.

9. The method of claim 3 , wherein the information related to the single frequency network includes information related to a single frequency network offset of SSB, and
wherein the single frequency network offset of SSB includes an offset related to single frequency network 0 of a neighbor TRP.

10. The method of claim 3 , wherein the SSB index is for identifying SSB in a synchronization signal (SS) burst.

11. The method of claim 1 , wherein the second delta configuration in the DL PRS configuration comprises an SSB-position burst informing time domain positions of transmitted SSB in a half frame with SSBs.

12. The method of claim 1 , wherein the first delta configuration in the SRS configuration comprises an SSB power informing an average energy per resource element (EPRE) of resource elements that carry secondary synchronization signals, and a system frame number (SFN) offset informing a time offset of slot0 in SFN0 of a cell with respect to a serving primary cell (PCell).

13. A communication device comprising:
one or more memories storing instructions;
one or more transceivers; and
one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to perform operations comprising:
obtaining i) a synchronization signal block (SSB) configuration, ii) a first delta configuration for the SSB configuration included in a sounding reference signal (SRS) configuration, and iii) a second delta configuration for the SSB configuration included in a downlink (DL) positioning reference signal (PRS) configuration; and
performing a multi-round trip time (RTT) positioning based on the SRS configuration and the DL PRS configuration,
wherein, based on the SRS configuration being received before the DL PRS configuration is received, the SSB configuration is included in the SRS configuration and is absent in the DL PRS configuration, and
wherein, based on the DL PRS configuration being received before the SRS configuration is received, the SSB configuration is included in the DL PRS configuration and is absent in the SRS configuration.

14. An apparatus comprising:
one or more processors; and
one or more memories operably connectable to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to perform operations comprising:
obtaining i) a synchronization signal block (SSB) configuration, ii) a first delta configuration for the SSB configuration included in a sounding reference signal (SRS) configuration, and iii) a second delta configuration for the SSB configuration included in a downlink (DL) positioning reference signal (PRS) configuration; and
performing a multi-round trip time (RTT) positioning based on the SRS configuration and the DL PRS configuration,
wherein, based on the SRS configuration being received before the DL PRS configuration is received, the SSB configuration is included in the SRS configuration and is absent in the DL PRS configuration, and
wherein, based on the DL PRS configuration being received before the SRS configuration is received, the SSB configuration is included in the DL PRS configuration and is absent in the SRS configuration.

Assignees

• Lg Electronics Inc

Inventors

• Thomas Robin

Classifications

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• G01S2013/9316

  combined with communication equipment with other vehicles or with base stations · CPC title

• G01S13/931

  of land vehicles · CPC title

• G01S13/765

  with exchange of information between interrogator and responder · CPC title

• G01S13/878 Primary

  Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector (G01S13/874 takes precedence) · CPC title